Dyfyniad APA

Soars, L., & Soars, J. (2009). American Headway 1: Student book (2nd ed.). New York: Oxford University Press.

Dyfyniad Arddull Chicago

Soars, Liz, và John Soars. American Headway 1: Student Book. 2nd ed. New York: Oxford University Press, 2009.

Dyfyniad MLA

Soars, Liz, và John Soars. American Headway 1: Student Book. 2nd ed. New York: Oxford University Press, 2009.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.